public MenuController(I2CUIDevice device, MenuItem rootMenu)
{
Device = device;
CurrentMenu = rootMenu;
DisplayedMenuIndex = 0;
Device.ButtonsPushed += HandleButtons;
ResetScreenState();
UpdateScreen();
}
public void RemoveChild(MenuItem item)
{
if (!children.Contains(item)) return;
children.Remove(item);
item.Parent = null;
}
public void AddChild(MenuItem item)
{
children.Add(item);
item.Parent = this;
}
public async void ConnectToScreen(int deviceAddress)
{
// https://ms-iot.github.io/content/en-US/win10/samples/PinMappingsRPi2.htm
// Get a selector string for bus "I2C1"
Debug.WriteLine("Looking for I2C bus...");
string aqs = I2cDevice.GetDeviceSelector();
// Find the I2C bus controller with our selector string
var dis = await DeviceInformation.FindAllAsync(aqs);
if (dis.Count == 0)
{
Debug.WriteLine("No devices found.");
return;
}
else
{
Debug.WriteLine("{0} device(s) found.", dis.Count);
}
// 0x40 is the I2C device address
var settings = new I2cConnectionSettings(deviceAddress);
settings.BusSpeed = I2cBusSpeed.StandardMode;
// Create an I2cDevice with our selected bus controller and I2C settings
I2cDevice device = await I2cDevice.FromIdAsync(dis[0].Id, settings);
Debug.WriteLine("Got device {0}, {1}", device.DeviceId, device.ConnectionSettings.SlaveAddress);
screen = new I2CUIDevice(device);
// Menu
MenuItem rootMenu = new MenuItem();
MenuItem sensorMenu = new MenuItem("Sensors & Servos");
rootMenu.AddChild(sensorMenu);
MenuItem accelerometerMenuItem = new MenuItem("Accelerometer");
accelerometerMenuItem.MenuItemChosen += delegate (MenuItem sender)
{
menu.PresentInfoScreen(new AccelerometerInfoScreen(car.Accelerometor));
};
sensorMenu.AddChild(accelerometerMenuItem);
MenuItem distanceMenuItem = new MenuItem("Distances");
distanceMenuItem.MenuItemChosen += delegate (MenuItem sender)
{
menu.PresentInfoScreen(new DistancesInfoScreen(car.FrontUltrasonicSensors, car.RearUltrasonicSensor));
};
sensorMenu.AddChild(distanceMenuItem);
MenuItem steeringMenuItem = new MenuItem("Steering Servo");
steeringMenuItem.MenuItemChosen += delegate (MenuItem sender)
{
menu.PresentInfoScreen(new ServoInfoScreen(car.SteeringServo, "Steering"));
};
sensorMenu.AddChild(steeringMenuItem);
MenuItem throttleMenuItem = new MenuItem("Throttle Servo");
throttleMenuItem.MenuItemChosen += delegate (MenuItem sender)
{
menu.PresentInfoScreen(new ServoInfoScreen(car.ThrottleServo, "Throttle"));
};
sensorMenu.AddChild(throttleMenuItem);
// --
MenuItem exitMenuItem = new MenuItem("Shut down");
exitMenuItem.MenuItemChosen += delegate (MenuItem sender)
{
ConfirmationPromptInfoScreen exitConfirmation = new ConfirmationPromptInfoScreen("Are you sure?");
exitConfirmation.RespondToPrompt += delegate (ConfirmationPromptInfoScreen prompt, bool confirm)
{
if (confirm)
{
screen.ClearScreen();
screen.WriteString("Goodbye!", 0, 4);
// TODO: Actually shutdown
return;
}
};
menu.PresentInfoScreen(exitConfirmation);
};
MenuItem restartProcessMenuItem = new MenuItem("Relaunch");
restartProcessMenuItem.MenuItemChosen += delegate (MenuItem sender)
{
ConfirmationPromptInfoScreen restartConfirmation = new ConfirmationPromptInfoScreen("Are you sure?");
restartConfirmation.RespondToPrompt += delegate (ConfirmationPromptInfoScreen prompt, bool confirm)
{
if (confirm)
{
screen.ClearScreen();
// TODO: Actually relaunch
return;
}
};
menu.PresentInfoScreen(restartConfirmation);
};
MenuItem systemMenu = new MenuItem("System");
systemMenu.AddChild(restartProcessMenuItem);
systemMenu.AddChild(exitMenuItem);
rootMenu.AddChild(systemMenu);
menu = new MenuController(screen, rootMenu);
}